CN101687494B

CN101687494B - Windscreen wiper device

Info

Publication number: CN101687494B
Application number: CN2008800221810A
Authority: CN
Inventors: X·博兰
Original assignee: Federal Mogul SA
Current assignee: Trico Belgium SA
Priority date: 2007-06-27
Filing date: 2008-06-18
Publication date: 2012-09-05
Anticipated expiration: 2028-06-18
Also published as: KR101493116B1; WO2009000729A1; JP2010531265A; CN101687494A; EP2008891B1; DE602007012529D1; ES2361362T3; US8307493B2; EP2008891A1; JP5331109B2; KR20100038202A; US20100170055A1

Abstract

A windscreen wiper device (1) comprising an elastic, elongated carrier element, as well as an elongated wiper blade (2), which can be placed in abutment with a windscreen to be wiped, which wiper blade (2) includes at least one longitudinal groove (5), in which groove (5) a longitudinal strip (6) of the carrier element is disposed, which windscreen wiper device (1) comprises a connecting device (8) for an oscillating arm (9), wherein said oscillating arm (9) in pivotally connected to said connecting device (8) about a pivot axis near one end, with the special feature that said longitudinal groove (5) has a closed circumference, wherein said connecting device is connected to said wiper blade (2).

Description

Wind shield wiper

Technical field

The present invention relates to a kind of wind shield wiper; It comprises the arbor (carrier element) of elastomeric, elongated (elongated); Also comprise the elongated scraping blade (wiper blade) processed by flexible material; This scraping blade can place being swept on the paravent of scraping, and wherein scraping blade comprises at least one hole slot longitudinally, is furnished with vertically rectangular as arbor in this hole slot; This wind shield wiper comprises that one supplies to connect the connecting device of swing scraping arm, and wherein said swing scraping arm is articulated and connected through pivot and the connecting device that is positioned at the one of which end.

Background technology

Such wind shield wiper discloses in the International Application No. WO 02/090155 of same patent name.Wind shield wiper of the prior art is designed to " no bearing " (yokeless) wiper device especially, a plurality of bearings are articulated and connected together, but by arbor scraping blade are setovered, so that it shows a distinctive camber line bending.In known wind shield wiper, said scraping blade comprises two relative hole slots of arranging along the longitudinal direction, is arranged in this hole slot as the vertical rectangular of (spaced apart) that be separated from each other of arbor.Each vertically rectangular adjacent end interconnects through end cap (connecting piece) separately.Too expensive defective appears feeling in disclosed technical scheme sometimes in the above-mentioned international application file.

Summary of the invention

The objective of the invention is the scheme of above-mentioned prior art is improved; It will improve disclosed wind shield wiper in the above-mentioned international application (PCT), and it provides a kind of " no bearing " cheaply (yokeless) formula wiper device or " flat scraping blade " (flat blade) formula wiper device.

In order to achieve the above object, a kind of like the wind shield wiper that the present invention disclosed, it is characterized in that described vertical hole slot has an osed top outer peripheral sidewall (closed circumference), wherein said connecting device is connected to described scraping blade.It no longer adopts on two vertical rectangular insertion scraping blades that separate in two relative vertical hole slots, but uses a central hole slot with osed top outer peripheral sidewall especially, and it forms this vertically rectangular center tube that supplies to pack into especially.Described connecting device be not connected vertically rectangular on, as of the prior art, but be connected on the scraping blade of processing by elastomeric material (like rubber).

Should be emphasized that the present invention is not limited to the wind shield wiper that only is used as on the manned passenger vehicle, it also can use on train and other rapid vehicles.

In a preferred embodiment of wind shield wiper of the present invention; Said scraping blade comprises the elongated bottom wiper spare (wiping part) that an elongated top holder (holding part) and is processed by flexible material; Wherein holder comprises vertical hole slot and fixing said bottom wiper spare, and said connecting device is connected on this holder.

Especially, holder comprise stretch out downwards stretch out support arm (extending arm), from cross sectional drawing, can find out, stretch out support arm and connect said wiper spare rotationally.In other words, realized mechanical connection between holder and the wiper spare, the said wiper spare that wherein rotates with respect to holder in the fixing use of holder.During use, the rotational motion of wiper spare is corresponding with the swing of swing scraping arm.Owing to there is this mechanical connection, wiper spare does not need bending to follow the hunting motion of swing scraping arm, has avoided the elastomeric material on the wiper spare to form permanent deformation under pressure.It should be noted; Feel sometimes wind shield wiper bad a bit be after using some months; Permanent deformation possibly appear in rubber wiper spare brush point (wiping tip); As describing in the above-mentioned international application (PCT), wiper spare brush must bend back and forth during work, and its brush is seriously crooked.Wiper brush elastomeric material is bent back and forth possibly cause this elastomeric material part permanent deformation many times, and therefore make the wiper mis-behave, attach out all negative results.

The practice of device of the present invention has been demonstrated wiper spare especially also to comprise wiper brush point (wiping tip), brushes sharp extended neck (neck) from wiper; And the increasing that goes out from neck extension brush (head), wherein brush is installed on by stretching out in the cavity that support arm forms on the holder.As preferred version, the cross-sectional plane of brush is circular, oval, square, rectangle, rhombus or heart-shaped.Wiper brush point places by on the paravent of wiper.Said wiper brush point, neck and brush preferably is made of one (in one piece) and extend to the whole length of scraping blade along the length direction of scraping blade.Particularly, holder comprises the nose that inwardly stretches out, and wherein said neck has at least a part to be fixed between this nose, and brush is positioned at this nose top.In other words, brush is limited in the cavity, and wherein hook-shaped nose makes that further wiper spare remains in the holder.Specifically, do not have the level and smooth pivot in wearing and tearing ground, include lubricant in the cavity in order to make wiper spare.Especially specifically, holder stretch out the nose that support arm inwardly stretches out, wherein neck has a part at least between this end construction, and wherein brush is positioned at the top of end construction.In other words, brush is limited in the cavity, and wherein hook-shaped end construction makes that further wiper spare remains in the holder.Specifically, trackslip movingly, include lubricant in the cavity in order to make wiper spare not have the wearing and tearing Horizon.

Should be noted that among the present invention that holder and wiper spare extend to the whole length of scraping blade along the length direction of scraping blade.In other words, scraping blade comprises the member of two mutual collaborative works, i.e. holder and wiper spare.This two part preferably connects each other slidably, and wherein the brush of wiper spare is slidably mounted in the cavity on the holder.This cavity extends to the whole length of scraping blade, thus form one have two tool open ends clip slot.The wherein open end of clip slot forms an inlet, and the wiper spare of making separately can manually be packed in this clip slot through this inlet, finally remains on the holder up to wiper spare and (is called primary importance).Also as an outlet, wiper spare can manually skid off from primary importance through this outlet this open end, separates (being called the second place) fully up to it, and can replace or repair this moment wiper spare.

In foundation another preferred embodiment of wind shield wiper of the present invention, connecting device and holder comprise the first groove/first protuberance structure of mutual collaborative work, and connecting device is remained on the holding device.In a preferred embodiment; Connecting device comprises downward buckle; From cross sectional drawing, can see; Buckle encases the sidepiece on the longitudinal direction of holder, and two parts are separated from each other at the faying face place, and wherein buckle and holder comprise that the first groove/first protuberance structure of mutual collaborative work remains on the holder connecting device.Specifically, each buckle comprises first protuberance that extends along the length direction of connecting device, and holder comprises first groove that extends along the holder length direction, and each first protuberance is matched with in corresponding first groove.More specifically, each first protuberance inwardly stretches out on cross-sectional plane.Everything has improved the rigidity (when connecting device is also very big when using big scraping blade, necessary especially) of connecting device, has also improved the minimum movements performance (minimum play) between connecting device and the holder.

In foundation another preferred embodiment of wind shield wiper of the present invention; Holder comprises one along second protuberance that extends on the holder length direction; Wherein connecting device comprises second groove along the extension of connecting device length direction, and this second protuberance is matched with in this second groove.Second protuberance on the holder preferably can be on connecting device opposite side produce deformation, in case connecting device is installed on the holder, this second protuberance will stop any motion of connecting device longitudinal direction.In the variant embodiment or technique complementary of this embodiment, connecting device also can produce deformation.Specifically, second groove on the connecting device comprises that one is embedded in the 3rd protuberance of corresponding hole, with cooresponding the 3rd protuberance of this hole connecting device is remained on the holder on the holder.

According in another preferred embodiment of wind shield wiper of the present invention, vertically the open end of clip slot is through sealing with scraping blade bonded assembly end cap separately.As optimal way, holder comprises second protuberance along the extension of holder length direction, and wherein each end cap comprises the 3rd groove along the extension of end cap length direction, and second protuberance on the holder is embedded in the 3rd groove of end cap.Equally, deformation preferably can take place in holder in this end cap.In the variant embodiment or technique complementary of this embodiment, the 3rd groove on the end cap is can deformation.As preferred version, the 3rd groove on the end cap comprises that one is entrenched on second protuberance of holder the 4th protuberance in the corresponding perforations.

Description of drawings

Below in conjunction with the legend in the accompanying drawing the present invention is done further illustrated in detail and describe, wherein:

Fig. 1 is the block diagram of the wind shield wiper of the present invention's one preferred embodiment;

Fig. 2 and Fig. 3 are respectively first embodiment and the cross sectional drawing of second embodiment when being connected to the connecting device place of swing scraping arm of wind shield wiper among Fig. 1;

Fig. 4 is the cross sectional drawing of three embodiment of Fig. 1 wind shield wiper when connecting device external position place;

Fig. 5 and Fig. 6 are the side-view of three embodiment of Fig. 1 wind shield wiper when the connecting device place, and this embodiment adopts different modes to keep connecting device;

Fig. 7 is the side-view of three embodiment of Fig. 1 wind shield wiper when two end cap places of scraping blade.

The specific embodiment

Fig. 1 and Fig. 2 have shown the advantageous variant embodiment according to wind shield wiper 1 of the present invention.Wind shield wiper 1 comprises a scraping blade 2, and scraping blade comprises the elastic body bottom wiper spare 4 that an elongated plastic cement top holder 3 and is elongated, and both extend along the whole length direction of scraping blade 2.In holder 3, be formed with a central longitudinally hole slot, one rectangular 6 is installed in this central hole slot (shown in Figure 2) by what flexible strip (spring band steel) was processed.Rectangular 6 constitute the arbor of the flexibility of blades insert 2, so to say that its be biased in one be arc line type position (sinuousness of control position with will be consistent) by the sinuousness of the windscreen of brushing.At each side of wind shield wiper 1, the end of scraping blade 2 connects end cap 7.

Wind shield wiper 1 also comprise one be used to swing scraping arm 9 the connecting device 8 (shown in Figure 1) processed of plastic material.This connecting device 8 comprise one with the buckle 10 (clamp element) of its one; Buckle encases vertical side 11 of holder 3; With the faying face connection of working in coordination, make connecting device 8 be connected firmly on the combination of forming by holder 3 and rectangular 6 separately.Swing scraping arm 9 is with the pivot and the connecting device 8 of its end.

With reference to Fig. 2 and Fig. 3, can see that from cross sectional drawing holder 3 is provided with the downward support arm 12 that stretches out with its one, stretches out support arm and forms a cavity 13, once more with reference to cross sectional drawing.This cavity 13 extends along scraping blade 2 whole length directions, forms one and has two open-ended clip slots.Continuation is with reference to Fig. 2 and Fig. 3, and wiper spare 4 comprises wiper brush point 14, from the extended neck of wiper brush point 14 15, from the brush 16 of neck 15 extended increasings, and the brush cross-sectional plane is a rectangle.Holder 3, wiper spare 4 can be slidingly connected each other, and wherein the brush 16 of wiper spare 4 is slidingly mounted in the above-mentioned clip slot of holder 3.One of them of clip slot be open-ended be used for when wiper spare 4 be the clip slot of manually packing into when opening the framing member of making in a minute, remain at last on the holder 3 up to wiper spare 4 and (be called primary importance or clip position).This is open-ended also serve as wiper spare 4 manually from clip slot (primary importance) skid off, become the member (second place) of " freedom " up to wiper spare 4, to be convenient for changing or to repair.Holder 3 stretch out the support arm 12 fixing brush 16 of wiper spare 4 pivotly, the swing scraping arm 9 on being connected holder 3 is done when swinging back and forth motion accordingly, makes wiper spare 4 do and pivots or hunting motion.

Guide vane (air deflector) 17 be installed in the face of and away from a side of the holder 3 of wiper spare 4, wherein guide vane 17 is formed in one (Fig. 2 and shown in Figure 3) with holder 3, perhaps making can be from the removable structure spare of holder 3 mounting or dismounting.Can put into lubricant in the cavity 13.

With reference to first embodiment when being used to the connecting device place of swinging scraping arm of the wind shield wiper among the Fig. 1 that shows among Fig. 2 and Fig. 31 and the cross sectional drawing (seeing Fig. 2 and Fig. 3 respectively) of second embodiment; Respectively stretch out support arm 12 and have rib shape first protuberance 18 that extends along the whole length of connecting device 8, holder 3 is provided with corresponding first groove 19 that extends along the whole length of holder 13 simultaneously.Each first protuberance 18 is embedded in corresponding first groove 19.This rib shape first protuberance 18 inwardly stretches out in the horizontal, i.e. the direction of arrow 20 signs.First groove 19 of this first protuberance 18 and respective shapes remains on connecting device 8 on the holder 3 as first groove/first protuberance synergetic structure.

Can find out that holder 3 sidepieces 11 have a rib shape second protuberance 21 in the cross sectional drawing of another embodiment when the wind shield wiper 1 among the Fig. 1 that from Fig. 4, shows is in the connecting device outside, and sidepiece extends in the whole length upper edge of holder 3.The respective sides of connecting device 8 has second groove 22 of respective shapes, and this second groove extends to the whole length of connecting device, and this rib shape second protuberance 21 is embedded in second groove 22 (shown in Figure 5).Fig. 5 is the lateral plan at wind shield wiper 1 connecting device place among Fig. 1; It has shown that connecting device 8 has one the 3rd protuberance 23; The 3rd protuberance is entrenched in the hole 24 of the respective shapes on rib shape second protuberance 21 on the holder 3, further keeps connecting device to be positioned on the holder 3.

Fig. 6 and Fig. 5 are corresponding; But it has shown the flexible program of technical scheme among Fig. 5; Wherein rib shape (rib-shaped) second protuberance 21 on the holder 3 can be in the relative vertical sidepiece generation deformation of connecting device, for example bending downwards, the feasible longitudinal movement that can stop connecting device.This bending (distortion) action is mounted to holder 3 backs at connecting device and takes place, shown in Reference numeral 25.

Among Fig. 7, shown the side-view of wind shield wiper 1 scraping blade both ends opening part end cap 7 among Fig. 1.Rib shape second protuberance 21 on the holder 3 can stop the longitudinal movement of end cap 7 in Reference numeral 25 places downwarping.Crooked (deformation) action takes place after end cap 7 is mounted on the holder 3.

Although do not describe among the figure, to one skilled in the art, swing scraping arm 9 is connected to the installation head that driven by fractional motor, and it is rotated around the axis is conspicuous.During use, axle drive shaft alternately rotates in the clockwise direction with on the anticlockwise direction, and it drives installation head and also rotates, and it once drives swing scraping arm 9 and rotates, and makes scraping blade 2 motions through connecting device 8.

The present invention is not confined to disclosed embodiment, also extends to other preferred variation embodiment of the protection domain that falls into the annex claim.For example, technical personnel expects easily, and the central long strip 6 among Fig. 2 and Fig. 3 can two independent rectangular 6 substitute with what be located at the hole slot that is arranged in respective shapes 5 on the holder 3.

Claims

1. wind shield wiper; Comprise elastomeric, an elongated arbor and an elongated scraping blade (2); This scraping blade (2) can place being swept on the paravent of scraping, and said scraping blade (2) comprises at least one vertical hole slot (5), is furnished with vertically rectangular (6) as arbor in this hole slot (5); This wind shield wiper (1) comprises that one supplies to connect the connecting device (8) of swing scraping arm (9); Wherein said swing scraping arm (9) is articulated and connected through pivot and the connecting device (8) that is positioned at the one of which end; It is characterized in that: said vertical hole slot (5) has the osed top outer peripheral sidewall; Wherein connecting device (8) is connected to described scraping blade (2); Described scraping blade (2) comprises the elongated bottom wiper spare (4) that an elongated top holder (3) and is processed by flexible material; Wherein said holder (3) comprises described vertical hole slot (5) and fixing this wiper spare (4), and said connecting device (8) is connected on this holder (3), and described connecting device (8) and holder (3) comprise that confession connecting device (8) remains on first groove (19)-first protuberance (18) structure of the mutual collaborative work on the holder (3).

2. wind shield wiper according to claim 1; It is characterized in that: described connecting device (8) comprise supply to cooperate with the vertical side of holder (11) to lower pinch plate (10); Holder (3) and buckle (10) are separated from each other through face of joint and come, and described buckle (10) and holder (3) comprise and supply connecting device (8) to remain on first groove (19)-first protuberance (18) structure of the mutual collaborative work on the holder (3).

3. wind shield wiper according to claim 2; It is characterized in that: said each buckle (10) comprises first protuberance (18) that extends along the length direction of connecting device (8); Wherein holder (3) comprises first groove (19) that extends along holder (3) length direction, and said first protuberance (18) is embedded in corresponding first groove (19).

4. according to claim 2 or 3 described wind shield wipers, it is characterized in that: described first protuberance (18) extends internally on cross-sectional direction.

5. according to claim 2 or 3 described wind shield wipers; It is characterized in that: described holder (3) comprises second protuberance (21) along the extension of holder (3) length direction; Wherein said connecting device (8) comprises second groove (22) along the extension of connecting device (8) length direction, and described second protuberance (21) is embedded in said second groove (22).

6. wind shield wiper according to claim 5 is characterized in that: said second protuberance (21) on the holder (3) can produce deformation on the opposite flank of connecting device (8).

7. wind shield wiper according to claim 6 is characterized in that: said second groove (22) on the connecting device (8) can produce deformation.

8. wind shield wiper according to claim 7; It is characterized in that: said second groove (22) on the connecting device (8) comprises one the 3rd protuberance (23), and the 3rd protuberance (23) is chimeric each other with the corresponding hole (24) that second protuberance (21) on the said holder is gone up setting.

9. wind shield wiper according to claim 1 is characterized in that: the end of said hole slot (5) is sealed through the end cap (7) that is connected in separately on the scraping blade (2) respectively.

10. wind shield wiper according to claim 9; It is characterized in that: described holder (3) comprises second protuberance (21) along the extension of holder (3) length direction; Wherein each end cap (7) comprises the 3rd groove along the extension of end cap length direction, and this second protuberance (21) is embedded in the 3rd groove.

11. wind shield wiper according to claim 10 is characterized in that: said second protuberance (21) on the holder (3) can produce deformation in end cap (7) inside.

12. wind shield wiper according to claim 10 is characterized in that: said the 3rd groove on the end cap (7) can produce deformation.

13. according to claim 11 or 12 described wind shield wipers; It is characterized in that: said the 3rd groove on the end cap (7) comprises one the 4th protuberance, and it is chimeric each other that second protuberance (21) on the 4th protuberance and the folded gripping member (3) is gone up the corresponding hole (24) that is provided with.